source: trunk/minix/lib/ip/getpeername.c@ 10

Last change on this file since 10 was 9, checked in by Mattia Monga, 13 years ago

Minix 3.1.2a

File size: 1.4 KB
Line 
1#include <errno.h>
2#include <stdio.h>
3#include <string.h>
4#include <sys/ioctl.h>
5#include <sys/socket.h>
6#include <netinet/in.h>
7
8#include <net/gen/in.h>
9#include <net/gen/tcp.h>
10#include <net/gen/tcp_io.h>
11#include <net/gen/udp.h>
12#include <net/gen/udp_io.h>
13
14#define DEBUG 0
15
16static int _tcp_getpeername(int socket, struct sockaddr *_RESTRICT address,
17 socklen_t *_RESTRICT address_len, nwio_tcpconf_t *tcpconfp);
18
19int getpeername(int socket, struct sockaddr *_RESTRICT address,
20 socklen_t *_RESTRICT address_len)
21{
22 int r;
23 nwio_tcpconf_t tcpconf;
24
25 r= ioctl(socket, NWIOGTCPCONF, &tcpconf);
26 if (r != -1 || errno != ENOTTY)
27 {
28 if (r == -1)
29 {
30 /* Bad file descriptor */
31 return -1;
32 }
33 return _tcp_getpeername(socket, address, address_len,
34 &tcpconf);
35 }
36
37#if DEBUG
38 fprintf(stderr, "getpeername: not implemented for fd %d\n", socket);
39#endif
40 errno= ENOSYS;
41 return -1;
42}
43
44static int _tcp_getpeername(int socket, struct sockaddr *_RESTRICT address,
45 socklen_t *_RESTRICT address_len, nwio_tcpconf_t *tcpconfp)
46{
47 socklen_t len;
48 struct sockaddr_in sin;
49
50 if (tcpconfp->nwtc_remaddr == 0 ||
51 tcpconfp->nwtc_remport == 0)
52 {
53 errno= ENOTCONN;
54 return -1;
55 }
56
57 memset(&sin, '\0', sizeof(sin));
58 sin.sin_family= AF_INET;
59 sin.sin_addr.s_addr= tcpconfp->nwtc_remaddr;
60 sin.sin_port= tcpconfp->nwtc_remport;
61
62 len= *address_len;
63 if (len > sizeof(sin))
64 len= sizeof(sin);
65 memcpy(address, &sin, len);
66 *address_len= len;
67
68 return 0;
69}
70
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